I creamed together the margarine and sugars in the stand mixer for 3 minutes. I added the egg, vanilla, and pumpkin, and mixed for another 3 minutes. I added half of the flour, the baking powder, baking soda, and all the spices, and mixed the batter briefly. I added the rest of the flour and stirred just to combine, then added the chocolate chips. I used a cookie scoop (1 1/2 tbsp, if I recall correctly) to measure these out, and flattened the top of them with a spoon to keep them from puffing up so much in the center. I got about 58 cookies on 4 Silpat-lined baking sheets, spacing the cookies out by about 2 inches. They baked for 10-11 minutes in a 350F oven. I let them cool briefly on the sheets before using a spatula to move them to a cooling rack.